Question for wedding DJs: do you ever let the bride or groom touch your equipment?

I'm a 1-year bedroom DJ, getting married in July. Wondering if it's kosher or just totally inappropriate to ask our DJ if I could play 2-3 songs on his equipment during the reception. I could provide my own usb. He''s not like a close friend or anything , but he's pretty chill. Thoughts? Feelings?